Journal
CARBON
Volume 48, Issue 5, Pages 1362-1368Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2009.12.026
Keywords
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Funding
- Singapore-MIT
- National University of Singapore
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A cost-effective method was used to fabricate large area (e g 2.5 x 2.5 cm(2) for a pitch of 0 5 mu m) nanometer scale pyramid arrays with precise and controllable location, spacing and size by interference lithography Using this method a large-area of vertically-aligned carbon nanofibers (VACNFs) with different interfiber-distance-to-fiber-height ratios and fiber aspect ratios were synthesised Very sharp tipped VACNFs were obtained and their field emission properties were measured and are compared to results in the literature We find that the field emission performance of VACNF arrays is optimized when the interfiber-distance-to-fiber-height ratio is equal to 1, in line with some experimental findings but different from some predictions (C) 2009 Elsevier Ltd All rights reserved
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